Couplings for Motors and Lead Screws

Couplings to Connect Motor Shafts to Lead Screws

Couplings are good at making sure your motor shaft fastens to the lead screw. Couplings are simply used to enable a motor to turn a lead screw, or other type of shaft. Couplings are composed of two hubs and a central spider. One hub is fastened to a motor shaft with a set screw. The other hub is fastened to the lead screw end. The rubber spider enables the two hubs to connect and turn while still allowing for a bit of flexibility in alignment and angle. Below, you will find coupling sets that include two hubs and one spider for common uses, and you can purchase coupling hubs and spiders separately. Please read the conditions of purchase prior to purchasing any products offered by BuildYourCNC.com.

Coupling Sets - Connects a single motor to a lead screw end

We have an assortment of bores (shaft diameters) from which to choose. How to choose, the first measurement is one side and the second measurement is the opposite side, pretty simple. Say you have a 1/4" motor shaft, and the lead screw is 5/8", you will need a 1/4" to 5/8" coupling. Each coupling comes in three parts, two hubs and one insert.

$11.00 - 1/4" to 1/4"

$11.00 - 1/4" to 3/8"

$11.00 - 1/4" to 1/2"

$11.00 - 1/4" to 5/8"

$11.00 - 5/16" to 1/4"

$11.00 - 5/16" to 1/2"

Note: For the products below, to create a complete coupling set, you will need two hubs (one for the motor shaft and one for the lead screw end) and you will need one spider. These items are only offered to allow for any configurations that is not offered above.

1/4" Bore Coupling Hub

This hub can be fastened to a 1/4" motor shaft or a 1/4" lead screw.

$4.00 single 1/4" hub

5/16" Bore Coupling Hub

This hub can be fastened to a 1/4" motor shaft or a 1/4" lead screw.

$4.00 single 5/16" hub

3/8" bore Coupling Hub

These hubs will typicall be used on motors with 3/8" shafts.

$4.00 single 3/8" hub

1/2" Bore Coupling Hub

This hub is typical used to fasten to a 1/2" lead screw.

$4.00 single 1/2" hub

5/8" Bore Coupling Hub

If you have a 5/8" lead screw, this is the hub for you.

$4.00 single 5/8" hub

Coupling Spider

This is the middle section of the coupling set. You will only need one of these to complete a set for one motor and one lead screw.

$3.00 Each

Products

Machine Kits and Plans

Motion Electronics:

Motors, Drivers, Power and more

Bearings for Lead Screws and Linear Motion.

Couplings to connect motor shafts to lead screws

Router Accessories

End Mills

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